Abaixo está uma instrução que descreve uma tarefa de geração de SQL, combinada com uma entrada que fornece mais contexto sobre os esquemas de tabela disponíveis. Escreva o código SQL que responda adequadamente à solicitação
 ###Instrução: Qual o adversário tem um jogo de 63?
 ###Tabelas: CREATE TABLE winners_knockout (winners_knockout_id AUTO_INCREMENT PRIMARY KEY, Home (1st leg) VARCHAR, Home (2nd leg) VARCHAR, 1st Leg VARCHAR, 2nd leg VARCHAR, Aggregate VARCHAR) CREATE TABLE club_records (club_records_id AUTO_INCREMENT PRIMARY KEY, Season INT, Belonging league VARCHAR, Matches INT, Points INT, Draw INT, Lose INT, Goal difference INT, Goals For INT, Goals Against INT, Position INT) CREATE TABLE wellington_city (wellington_city_id AUTO_INCREMENT PRIMARY KEY, Name VARCHAR, Years VARCHAR, Gender VARCHAR, Locality VARCHAR, Authority VARCHAR, Decile INT) CREATE TABLE regular_season (regular_season_id AUTO_INCREMENT PRIMARY KEY, Game INT, February INT, Opponent VARCHAR, Score VARCHAR, Record VARCHAR, Points INT) CREATE TABLE season_by_season_statistics (season_by_season_statistics_id AUTO_INCREMENT PRIMARY KEY, Season VARCHAR, Points per Game VARCHAR, Total Yards per Game VARCHAR, Rushing Yards per Game VARCHAR, Passing Yards per Game VARCHAR, Sacks VARCHAR, Interceptions VARCHAR)  
SELECT Opponent FROM regular_season WHERE Game = 63